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/*!
 * @file ac780x_wdg.c
 *
 * @brief This file provides WDG integration functions.
 *
 */

/* ===========================================  Includes  =========================================== */
#include "ac780x_wdg_reg.h"

/* ============================================  Define  ============================================ */

/* ===========================================  Typedef  ============================================ */

/* ==========================================  Variables  =========================================== */
/* WDG callback pointer */
static DeviceCallback_Type s_wdgCallback = (DeviceCallback_Type)NULL;

/* ====================================  Functions declaration  ===================================== */

/* ======================================  Functions define  ======================================== */
/*!
 * @brief Initialize WDG module
 *
 * @param[in] config: WDG configuration pointer
 * @return none
 */
void WDG_Init(const WDG_ConfigType *config)
{
    uint32_t CS0, CS1;

    DEVICE_ASSERT(NULL != config);

    /* enable WDG system module */
    CKGEN_Enable(CLK_WDG, ENABLE);
    CKGEN_SoftReset(SRST_WDG, ENABLE);

    CS0 = WDG->CS0;
    CS1 = WDG->CS1;

    CS1 &= ~WDG_CS1_FLG_Msk;
    /* config WDG clocksource */
    CS1 &= ~WDG_CS1_CLK_Msk;
    CS1 |= (((uint32_t)config->clockSource) << WDG_CS1_CLK_Pos) & WDG_CS1_CLK_Msk;

    /* config WDG update */
    if (DISABLE == config->updateEn)
    {
        CS0 &= ~WDG_CS0_UPDATE_Msk;
    }
    else
    {
        CS0 |= WDG_CS0_UPDATE_Msk;
    }

    /* config WDG enable */
    if (DISABLE == config->WDGEn)
    {
        CS0 &= ~WDG_CS0_EN_Msk;
    }
    else
    {
        CS0 |= WDG_CS0_EN_Msk;
    }

    /* config WDG prescaler enable */
    if (DISABLE == config->prescalerEn)
    {
        CS1 &= ~WDG_CS1_PRES_Msk;
    }
    else
    {
        CS1 |= WDG_CS1_PRES_Msk;
    }

    /* config WDG windows mode enable */
    if (DISABLE == config->windowEn)
    {
        CS1 &= ~WDG_CS1_WIN_Msk;
    }
    else
    {
        CS1 |= WDG_CS1_WIN_Msk;
    }

    /* config WDG interrupt enable */
    if (DISABLE == config->interruptEn)
    {
        CS0 &= ~WDG_CS0_INT_Msk;
    }
    else
    {
        CS0 |= WDG_CS0_INT_Msk;
    }

    /* register user callback function */
    s_wdgCallback = config->callBack;

    /* config WDG interrupt in NVIC */
    if (DISABLE == config->interruptEn)
    {
        NVIC_DisableIRQ(WDG_IRQn);
        NVIC_ClearPendingIRQ(WDG_IRQn);
    }
    else
    {
        NVIC_EnableIRQ(WDG_IRQn);
    }

    DisableInterrupts;
    WDG_Unlock();
    WDG_SetTimeOutVal(config->timeoutValue);
    WDG_SetWindowVal(config->windowValue);
    WDG_SetCS1(CS1);
    WDG_SetCS0(CS0);
    EnableInterrupts;
}

/*!
 * @brief WDG De-initialize
 *
 * @param[in] none
 * @return none
 */
void WDG_DeInit(void)
{
    s_wdgCallback = (DeviceCallback_Type)NULL;
    NVIC_DisableIRQ(WDG_IRQn);
    NVIC_ClearPendingIRQ(WDG_IRQn);
    CKGEN_SoftReset(SRST_WDG, DISABLE);
    CKGEN_Enable(CLK_WDG, DISABLE);
}

/*!
 * @brief set WDG Callback function
 *
 * @param[in] callback: callback function
 * @return none
 */
void WDG_SetCallback(DeviceCallback_Type callback)
{
    s_wdgCallback = callback;
}

/*!
 * @brief WDG interrupt request handler
 *
 * @param[in] none
 * @return none
 */
void WDG_IRQHandler(void)
{
    /* excute callback function */
    if (NULL != s_wdgCallback)
    {
        s_wdgCallback(WDG, 0U, 0U);
    }
}

/* =============================================  EOF  ============================================== */
